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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Not under a timeline - cow can not be sold as steak






2. Milk ~305 days - dry 60 days prior to calving






3. (FSH) causes egg to mature in females






4. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






5. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






6. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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7. Urinary calculi.






8. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






9. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






10. To remove/separate testicles from animal's body before animal reaches puberty






11. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






12. When are dairy cattle dehorned?






13. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






14. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






15. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






16. Birthing process (termination of gestation)






17. 265-285 days






18. Urinary calculi.






19. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






20. Depository for semen during insemination. where urine leaves the body






21. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






22. ~305 days (altough often longer due to breeding difficulties)






23. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






24. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






25. Actual heat cycle (period)






26. Scar tissue plugs up chambers of udder






27. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






28. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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29. Contains and regulates the temp of the testes for sperm production






30. Sperm is produced here






31. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






32. Not under a timeline - cow can not be sold as steak






33. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






34. (male) pushes the testes outward toward the legs for a cool-down off of the body






35. Front feet and head first. (except for hogs and dogs)






36. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






37. Depository for semen during insemination. where urine leaves the body






38. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






39. Provide nourishment for the developing sperm






40. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






41. What helps regulate spermatogenesis?






42. 114 days






43. Parturition is controlled by...






44. Days which have increasing daylight hours

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45. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






46. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






47. Days which have decreasing daylight hours

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48. 26 hours after estrus begins






49. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






50. Way to know everything is alright with the breeding male